Is it possible to upload a PDF note attachment via ETAPI?

[alrhalford]

I have read the ETAPI docs, and API spec, and I am trying the following payload:

curl --insecure -H "Content-type: application/json" -H "Authorization: foo" -d '{"ownerId": "4Ob8C3t2SDDd", "mime": "application/pdf", "content": '$(base64 ./foo.pdf)', "position": 0, "role": "file", "title": "PDF"}' 'https://trilium-notes.localdomain/etapi/attachments/'

Which produces a bunch of errors:

curl: (3) URL rejected: Bad hostname
curl: (6) Could not resolve host: Su7yRjJVSJAMilYGArpOmtB0TY5wGyRRckzl389OCKQfNqFNpeLw2Y8f28
curl: (3) URL rejected: Bad hostname
curl: (6) Could not resolve host: cWRfgzEXiSwxWeW2OuYSjAAjd1kC

To confirm that this is not an auth or networking issue - the command works fine if instead of the base64 stuff I put in a bit of junk data. Obviously it is not rendered properly, because it is not a pdf, but the attachment is successfully created in trilium.

I'm guessing these are part of the base64 encoded pdf. I am not sure what the issue is, though, perhaps the presence of the file makes the payload too long? I did try using multipart-form, even though it's not in the API spec, but no luck!

[pano9000]

The issue here seems to be some unescaped single quotation marks, which causes parts of the base64 encoded string, that you try to pass as "content", to be parsed as "hostname" by curl.

check the "-d" parameter: you start with a single apostrophe, but then you have a second par of (unescaped) single quotation marks for the "content" value

-d '{"ownerId": "4Ob8C3t2SDDd", "mime": "application/pdf", "content": '$(base64 ./foo.pdf)', "position": 0, "role": "file", "title": "PDF"}'

hope that helps :-)

[alrhalford]

Thanks for taking a look. Could you give me a bit more of a hint? The only way I can get it to not error is if it ends up uploading literally '$(base64 ./foo.pdf)'. I've tried escaping the single quotes, escaping the single quotes and wrapping it all in double quotes, and the other way around.

[pano9000]

I guess you could try wrapping the -d string with " instead of ' – but requires you to escape every " inside it with a \.
the following works for me
so something like

-d "{\"content\": \"$(base64 ./foo.pdf)\", \"position\": 0}" (and so on and so forth)

e.g. if I do

echo "{\"content\": \"$(base64 test.txt)\", \"position\": 0}"

it correctly echoes out:

{"content": "eW8K", "position": 0}

[alrhalford]

That helped a lot, thank you. It ended up getting quite complicated, but I think I'm most of the way there. The only problem now is that content is base64 encoded, and I don't know how to get trilium to interpret it as a PDF. I have prefixed it with "data:application/pdf;base64,", followed by the base64 encoded pdf, but it still does not display.

[Nriver]

Trilium-py provides functionality to create attachments. You can refer to the documentation for more details: Trilium-py GitHub Repository.

To create an attachment, you can use the following code:

res = ea.create_attachment(
    ownerId='ViuK7g6K0sWV',  # ID of the owner node
    file_path=r'E:\test\1.pdf',  # Path to the file you want to attach
)

In this example:

• ownerId: The ID of the node to which the attachment will be associated.
• file_path: The absolute path of the file you wish to attach.

The result will contain information about the created attachment.